supervised machine learning & the automated-ml platform

Hooman H. Rashidi, MD, MS

Professor & Vice Chair of GME

Vice Chair of Informatics &

Computational Pathology

University of California, Davis School of Medicine

Supervised Machine Learning & the Automated-ML platform MILO (Machine Intelligence Learning Optimizer)

My background

• Practicing Physician • Clinical Hematopathologist

• My graduate studies (UCSD) was in Bioinformatics (Masters Degree)

• Extensive background in Bioinformatics

• Hence the strong interest in Artificial Intelligence (AI) and Machine Learning (ML)

• PI of multiple ML research studies• 30+ members within the research

group

Disclosures

• Systems And Methods For Machine Learning-based Identification Of Acute Kidney Injury In Trauma Surgery And Burned Patients (Ea r l y P r e d i c t i o n O f A k i W i t h M a c h i n e L e a r n i n g ) : C o - i nv e n t o rs ( H o o m a n H . R a s h i d i M D M S & N a m Tra n P h D )

• U n i ve rs i t y O f C a l i fo r n i a I n t e l l e c t ua l P ro p e r t y

• Systems And Methods For Machine Learning-based Identification Of Sepsis (Ea r l y P r e d i c t i o n O f S e p s i s W i t h M a c h i n e L e a r n i n g ) : C o - i nv e n t o rs ( H o o m a n H . R a s h i d i M D M S & N a m Tra n P h D )

• U n i ve rs i t y O f C a l i fo r n i a I n t e l l e c t ua l P ro p e r t y

• Systems And Methods For Automated Machine Learning (M I LO: M a c h i n e I n t e l l i g e n c e L e a r n i n g O p t i m i ze r )

• U n i ve rs i t y O f C a l i fo r n i a I n t e l l e c t ua l P ro p e r t y ( Pa te nt Pe n d i ng )

• C o - i nve nto rs O f M I LO

• H o o m a n H . R a s h i d i M D M S

• S a m e r A l b a h ra M D

• N a m Tra n P h D

Talk Outline

• Machine Learning (ML) overview• ML classification

• Supervised Machine Learning (ML)

• Non-Image ML models: • Our AKI ML studies

• Automated Machine Learning• MILO: Machine Intelligence Learning

Optimizer

What is Artificial Intelligence / Machine Learning?

Artificial Intelligence

What is Artificial Intelligence / Machine Learning?

Artificial Intelligence

Machine Learning

“AI is the capability for machines to imitate intelligent human behavior, while ML is an application of AI that allows computer systems to automatically learn from experience without explicit programming. Paraphrasing Arthur Samuel and others, ML models are constructed by a set of data points and trained through mathematical and statistical approaches that ultimately enable prediction of new previously unseen data without being explicitly programmed to do so”

Rashidi HH, et al. Academic Pathology, 2019

Human Learning versus Machine Learning

Human learns through “experiences” and forms neuronal connections to help recall

Machine learns by experiences AKA “DATA” to build neuronal connections to be able to recall

Examples of AI and ML in our daily life

• Siri and Alexa• spam filtering• photo organizers• Facebook or LinkedIn people connectors• Amazon recommendations, etc.

Is there a difference in machine learning for medical

applications?

YES, Absolutely !

What is so different about our field (medicine) ?

• Practice of medicine is still a balance between art and science • most fields are experience driven

• Since the gold standard for how we practice is based on expertise that is experience driven, the data collected will have more variations

• Ultimately increases the chance of interobserver variability

• Hence the data sets used in our fields are not as easily reproducible as in other fields that employ machine learning

What ML approaches are used the most in medicine / pathology?

• Supervised Machine Learning

Rashidi, HH et al. Academic Pathology, 2019

The “real world” can be a tough place!


• MD Anderson partners with IBMWatson to use “Oncology ExpertAdvisor” for targeting cancer therapy.


• MD Anderson partners with IBMWatson to use “Oncology ExpertAdvisor” for targeting cancer therapy.

• “A new era of computing has emerged,in which cognitive systems“understand” the context within users’questions, uncover answers from BigData, and improve in performance bycontinuously learning fromexperiences”


$62 million wasted without achieving goals“Treating cancer is more complex than winning a trivia game, and the “vast universe of medical knowledge” may not be as significant as purveyors of artificial intelligence make it out to be…”

https://www.healthnewsreview.org/2017/02/md-anderson-cancer-centers-ibm-watson-project-fails-journalism-related/

WHERE DO WE GO NOW?What are some potential ”safe” applications of AI/ML in health care?

Realistic Opportunities for Healthcare AI/ML?

AI/ML Enhanced Detection of Burn Related AKI: A Proof of ConceptTran NK, Sen S, Palmieri TL, Lima K, Falwell S, Wajda J, Rashidi H. Burns 2019

• Goal: To build Models that predict Acute kidney Injury (AKI)

Current Standard for AKI diagnosis

• Kidney Disease and Improving Global Outcome (KDIGO)• Based on Serial Creatinine (Cr) and Urine Outputs (UOP)• Takes days (since it’s on serial Cr and UOP measurements)• Sensitivity in 50s

Here comes NGAL to the rescue

• NGAL (Neutrophil Gelatinase Associated Lipocalin)• Used in Europe• Reportedly in the process of being FDA cleared in US

AI/ML Enhanced Detection of Burn Related AKI: A Proof of ConceptTran NK, Sen S, Palmieri TL, Lima K, Falwell S, Wajda J, Rashidi H. Burns 2019

The ”Burns” population proof of concept

• Showed that ML (specifically a K-NN model) can enhance NGAL’s performance for

• By combining it with other markers • BNP• Cr• UOP

• Sensitivity and accuracy in low 90s

Our Follow up AKI ML study

• Can the Burns-derived AKI ML model predict AKI in Non-Burn Trauma patient population

Early Recognition of Burn- and trauma-Related Acute Kidney injury: A pilot comparison of Machine Learning techniques. Hooman H. Rashidi*, Soman Sen, Tina L. Palmieri, Thomas Blackmon, Jeffery Wajda & Nam K. Tran*. Nature Scientific Reports Jan 2020

Rashidi H. et. al. Nature’s Scientific Reports, 2020


Creatinine + UOP vs Creatinine Only vs UOP Only

What Happens when you Introduce NGAL

In summary

• The AKI ML models trained on the Burn Population were able to predict AKI in Non-Burn trauma and Burn patient populations

• ML enhances the predictive capability of NGAL and NGAL combined with other markers (esp. Cr and BNP)

• Most importantly:• The AI/ML algorithm helped predict AKI 61.8 (32.5) hours faster than the

KDIGO criteria for burn and non-burned trauma patients


AI/ML Real World Application for Burn AKI?Tran N et. al. Burns 2019Rashidi H. et. al. Nature’s Scientific Reports, 2020

AI/ML Real World Application for Burn AKI?

~24 hours earlier!

Tran N et. al. Burns 2019Rashidi H. et. al. Nature’s Scientific Reports, 2020

Can this Machine Learning process that was used in this study be automated?

•So that ALL investigators can have EASY access to these Machine Learning methods

•How to automate this process so that• No ML expertise is required• No programming or Software Engineering

background is needed

M I L O

Some Basic Facts:

• Artificial intelligence / Machine learning (ML) is a very powerful tool

• ML is starting to get incorporated into various aspects of health care and health science disciplines


Current Challenges with ML:

• Can be intimidating • requires a team with

ML, statistics and programming expertise

• Can be very time consuming and not easily accessible

• Final ML model can be very challenging to deploy

• requires software engineering expertise to make an App or Website

Imagine a world where Artificial Intelligence (AI) / Machine Learning (ML) studies are as EASY as using a website on your laptop or even your smart phone

NO ML or Statistics expertise needed

NO Software engineering expertise needed

NO Programming required

It’s just plain easy to do !!!

OUR SOLUTION: MILO

MILO : Machine Intelligence Learning Optimizer

Your Fully Automated Machine Learning (Auto-ML) Solution

MILO makes AI/ML accessible for ALL

No Coding, No Programming No Machine Learning expertise required

All the heavy lifting is done by MILO!

MILO’s key highlights?

Expedites the machine learning process

Drastically reduces the time required to complete an ML project• Much faster than the

current traditional ML approach

Improves the performance outcome of the machine learning models

Builds a much larger number of ML models compared to

the current ML approachFinds the best ML model for a given study compared to the

current ML approach

A very simple User Interface (UI)

MILO’s Web-App makes the AI/ML study super easy to

operateAll the heavy lifting is done

through MILO’s UI

MILO Expedites the Machine Learning Process

• Traditional ML study approach• Acute Kidney Injury (AKI)

project required ~400 man hours (4 months) to complete

• Sepsis project required ~300 man hours (3 months) to complete

• MILO’s Auto-ML Approach• Acute Kidney Injury (AKI)

project through MILO was completed in <20 hours

• Sepsis project through MILO was completed in <18 hours

Tran et. al. Burns 2019.

Rashidi et. al. Nature’s Scientific Reports 2020.

MILO: A Validated Platform

Validated on 10 different IRB approved studies• Acute kidney injury (AKI) predictor (study 1): • AKI predictor (study 2): Burns Surgery• Sepsis predictor: Burns• Delayed Graft Function predictor: Kidney transplant • Cath Result - PET predictor: Cardiology• TB (11 Ag): Global Health Infectious disease• TB(31 Ag): Global Health Infectious disease• Massive Transfusion Protocol (MTP): Trauma• Step 1 Test Early intervention Predictor: Med school• Step 1 Test Late intervention Predictor: Med School

AI/ML Enhanced Detection of Burn Related AKI: A Proof of ConceptTran et. al. Burns 2019

Early Recognition Of Burn- And Trauma-related Acute Kidney Injury: A Pilot Comparison Of Machine Learning TechniquesRashidi et. al. Nature’s Scientific Reports 2020

How does MILO work?

• MILO makes NO Assumptions• About your dataset

• MILO enables each Unique Dataset to findits most suitable ML Algorithm/Model

• rather than having a data scientist and their team choosing an ML algorithm that they feel is most suitable for finding the best model for the dataset

• Follows Industry’s CRISP-DM Approach

MILO: Machine Intelligence Learning Optimizer

Curr

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proa

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49,940 models~400 hours (~4 months)

MORE MODELS – LESS TIME – MORE OPPORTUNITIES

ROC-AUC 94

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? ?Are there any other potential models?



ROC-AUC 94

Curr

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284,670 models

24 hours

MIL

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ROC-AUC 94

Curr

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ILO



MILO found six additional better models not found by the Current Traditional ML approach


284,670 models

<24 hours

ROC-AUC 94

ROC-AUC 97 ROC-AUC 98 ROC-AUC 98

ROC-AUC 98 ROC-AUC 98 ROC-AUC 94

How does MILO achieve this?

Builds 300,000+ ML models

Optimized to find the best hyperparameters and feature sets with our proprietary embedded approach & FOLLOWS ML STUDY BEST PRACTICES (SIMILAR TO THE FOLLOWING RECENT MANUSCRIPTS)

Rashidi et. al. Nature’s Scientific Reports Jan 2020


QUICK DEMO OF MILO

BUILD A MODEL TO PREDICT SEPSISWITH MILO

Import in the Balanced Training Dataset (Dataset 1)

Import Generalization Dataset (Dataset 2): Representing the true prevalence

MILO IN ACTIONQuick Demo

INSERT MILO MP4 VIDEO 1

https://drive.google.com/file/d/1yH4Bnty28JkzEMnFNEcgE9IgNjublFqv/view?usp=drive_web

MILO is also very transparent

INSERT MILO MP4 VIDEO 2

https://drive.google.com/file/d/1fFn4N6fO1uHa04tJGgRAaSHBSuRroAPx/view?usp=drive_web

In Summary: MILO• It’s super easy to use

• No Machine Learning (ML) expertise needed

• No Programming or software engineering expertise needed• MILO is your personal ML & Software engineering Expert Team

• MILO• Follows ML Study Best practices • Finds your Best ML Model and does it Much Faster • Most importantly it’s a validated platform

Our Studies & Collaborators

Our AKI & Sepsis ML Team• Nam Tran• Tina Palmieri• Soman Sen• Samer Albahra• Jeff Wajda• Hooman Rashidi

Collaborators for our other validation studies• Joe Galante & Shawn Tejiram: MTP• Imran Khan : TB• Kuang yu Jen: DGF (transplant)• Thomas Smith & William Wung

(Cath results: Cardiology)• Erin Griffin, Sharad Jain & Kristin

Olson (USMLE step 1 studies)

MILO’s Core Team

Samer Albahra MD Hooman H. Rashidi MD MS Nam Tran, PhD

Thank you for your attention

supervised machine learning & the automated-ml platform

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